<?php
/**
 * Created by PhpStorm.
 * User: lyon
 * Date: 16-12-6
 * Time: 下午1:47
 */
function GetIP(){
    if(!empty($_SERVER["HTTP_CLIENT_IP"]))
        $cip = $_SERVER["HTTP_CLIENT_IP"];
    else if(!empty($_SERVER["HTTP_X_FORWARDED_FOR"]))
        $cip = $_SERVER["HTTP_X_FORWARDED_FOR"];
    else if(!empty($_SERVER["REMOTE_ADDR"]))
        $cip = $_SERVER["REMOTE_ADDR"];
    else
        $cip = "无法获取！";
    return $cip;
}
echo "<br>访问IP: ".GetIP()."<br>";
echo "<br>访问来路: ".$_SERVER["HTTP_REFERER"];